The present disclosure relates to a dishwasher. The dishwasher, which is installed in a built-in manner in a system kitchen including a cabinet having a receiving space and a counter disposed on the cabinet to include an opening, includes a tub including a front opening, a front door configured to open and close the front opening, a cover frame disposed in the opening of the counter, an upper door rotatably coupled to the cover frame to open and close the opening of the counter, a trigger configured to lock or unlock the upper door, and a lift apparatus disposed to be spaced apart from the trigger and configured to open the upper door by a predetermined angle when the trigger releases the locking of the upper door.